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Inter-Landau-level transitions in the bilayer graphene at high perpendicularmagnetic field at the filling-factor v<<1 have been studied. Thenext-nearest-neighbor transitions, energy difference between dimer andnon-dimer sites and layer asymmetry are included. The influence of Coulombinteraction is taken into account. The magnetoplasmon excitations in bilayergraphene at small momenta are considered in the frame of the Hartree-Fockapproximation. It is shown that asymmetry in cyclotron resonance of cleanbilayer graphene depends on magnetic field. At lower magnetic fields the energysplitting in the spectrum is due to electron-hole one-particle asymmetry, athigher magnetic fields the energy splitting in the spectrum is due to Coulombinteraction. For the fullsymmetric case with half-filled zero-energy levels theenergy splitting proportional to the energy of Coulomb interaction is foundboth for bilayer and monolayer graphene.

Coulomb interaction and electron-hole asymmetry in cyclotron resonance of bilayer graphene in high magnetic field